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Sika Decothane Ultra, High Performance One-component Uv-stable Liquid Applied Polyurethane Membrane, Exterior, 15 L

Sika Decothane Ultra, High Performance One-component Uv-stable Liquid Applied Polyurethane Membrane, Exterior, 15 L

Waterproofing
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Packaging 15 L
Width mm
Length m
Weight Kg
Usage Decothane Ultra may only be used by experienced professionals.  For roof waterproofing solutions in both new construction and refurbishment projectsFor roofs displaying complex detail areas, even when accessibility is limitedFor cost efficient life cycle extension of failing roofsFor odour sensitive areasFor insulated and non-insulated roof designs
Chemical Base Aromatic polyurethane, one-component, elastic membrane
Usage Area Exterior
Color Slate Grey (RAL 7015)
Storage Conditions The product must be stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures >0°C and <+25°C. Higher storage temperatures may reduce shelf life of product.  Reference shall also be made to the storage recommendations within the safety data sheet.  It is recommended that the product is stored under warm conditions (20°C) prior to application at temperatures below 10°C
Density ~1.42 kg/l approx. (+23°C)(EN ISO 2811-1)
Consumption N/A

HIGH PERFORMANCE, ONE-COMPONENT, HIGH SOLIDS, UV-STABLE, LIQUID APPLIED POLYURETHANE WATERPROOFING MEMBRANE WITH LOW ODOUR

Decothane® Ultra is a cold-applied, one-component,seamless, highly elastic, UV stable and moisture-triggered polyurethane membrane with significantly reduced odour.  It cures to form a seamless, durable and weather-resistant waterproofing solution for exposed roof areas

  • Low maintenance
  • One component - no mixing, easy and ready to use
  • Cold applied – requires no heat or flame
  • Minimal odour - suitable for odour sensitive projects
  • High solids
  • Seamless membrane
  • Compatible with Sika® Reemat Premium – easy to detail
  • Easily recoated when needed - no stripping required
  • Elastic - retains elasticity even at low temperatures
  • Good adhesion to most substrates – see table
  • Free from rain damage almost immediately on application (see table)
Usage
Decothane® Ultra may only be used by experienced professionals.  For roof waterproofing solutions in both new construction and refurbishment projects
  • For roofs displaying complex detail areas, even when accessibility is limited
  • For cost efficient life cycle extension of failing roofs
  • For odour sensitive areas
  • For insulated and non-insulated roof designs
 
Advantages
  • Low maintenance
  • One component - no mixing, easy and ready to use
  • Cold applied – requires no heat or flame
  • Minimal odour - suitable for odour sensitive projects
  • High solids
  • Seamless membrane
  • Compatible with Sika® Reemat Premium – easy to detail
  • Easily recoated when needed - no stripping required
  • Elastic - retains elasticity even at low temperatures
  • Good adhesion to most substrates – see table
  • Free from rain damage almost immediately on application (see table)
Packaging

15 Litre Metal Pails
Colour

Slate grey (RAL 7015); Dove Grey (RAL 7040); Shale Grey (RAL 8500); White, (RAL 9016); other colours available upon request
Technical Information
Tensile Strength

Ultra 15

Ultra 20

Ultra 25

10 N/mm²

8.5 N/mm²

8.3 N/mm²

Tensile resistance

370 N/25mm

410 N/25mm

530 N/25mm

Tear Strength

30 N/mm

30 N/mm

30 N/mm

Service Temperature

-30°C to +80°C (intermittent)

Chemical Resistance

Strong resistance to a wide range of reagents including paraffin, petrol, fuel oil, white spirit, acid rain, detergents and moderate solutions of acids and alkalis.  Some low molecular weight alcohols can soften the material.  Contact Technical Services for specific recommendations.

Salt spray to ASTM B117 (1000 hours continuous exposure) and prohesion testing to ASTM G85-94; Annex A5 (1000 hours cyclic exposure)

Dry film thickness

Ultra 15

Ultra 20

Ultra 25

1.5 mm

1.8 mm2.2 mm
Application Information
Ambient Air Temperature

+2°C min/+40°C max
Relative Air Humidity

20% min/85% max
Dew Point

Beware of condensation.  surface temperature during application and cure must be a minimum of 3°C above dew point.
Substrate Temperature

+2°C min/+60°C max
Substrate Moisture Content

Wood moisture equivalent (wme) (max): <28%
Pot Life

Decothane® Ultra is designed for fast drying.  High temperatures combined with high air humidity will increase the drying process. Thus, material in opened containers should be applied immediately.  In opened containers, the material will form a film within 1 hour.
Waiting Time / Overcoating

~48 hours.  For longer periods ≤ 14 days, the surface must be reactivated with Sika Reactivation Primer.
Applied Product Ready for Use

Temperature

Relative Humidity

Rain Resistant

Overcoating Time

Full Cure

+5°C

50%

~1 hour

Overnight

~24 hours

+10°C

50%

~1 hour

~8-10 hours

~12-24 hours

+20°C

50%

~1 hour

~4-6 hours

~12-18 hours

Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.

*Be aware that heavy rain or rain showers can physically mark or damage the still liquid coating

Application at heavier than recommended thicknesses may result in a prolonged soft feeling to the coating.  This will eventually cure.